NOREX A Distributed Reengineering Environment

17th Workshop on SEERE, Risan, 2007

NOREX: A Distributed Reengineering Environment

Dr. Radu Marinescu

NOREX

A Distributed Reengineering

EnvironmentRadu Marinescu

LOOSE Research Group Politehnica University of Timişoara

[email protected]

loose.upt.ro

mailto:[email protected]

http://loose.upt.ro/

http://loose.utt.ro/index.html



Dr. Radu Marinescu

Generic Reengineering Environment



Dr. Radu Marinescu

iPlasma: Example of Reeng. Environment

Model Extractors

MCC / FAST Memoria / Recoder

ModelsHisMo MEMORIA Membrain

build

Analyses

MetricsDetection Strategies

CodeDuplication

Data-flowAnalyses

use

Front-end

INSIDER

integrate



Dr. Radu Marinescu

Four Layers of Metamodeling Architecture

Layer

Meta Meta Model

Meta Model

Model

User Objects

Description

Defines the core ingredients sufficient for defining languages for specifying meta-models

Defines a language for specifying Models

Defines a language to describe an information domain.

Describes a specific situation in an information domain.

Example

(CDIF) MetaEntity, MetaAttribute(MOF) Class, MofAttribute

(UML) Class, Attribute, Association(Database) Table, Column, Row

Student, Course, enrolledin

Student#3, Course#5,Student#3.enrolledin.Course#5



Dr. Radu Marinescu

The power of going Meta-Meta...



Dr. Radu Marinescu

Concepts Entities

Examples: color , drawArea() , GraphicFigure, lrg.drawing.figures etc

Entities can be described by an Entity Type Examples:

variable, method, class, package

Entities have Properties … and their Entity Type knows how to “compute” them Examples:

variable color is a protected attribute method drawArea() has a 25 lines of code class GraphicFigure is abstract etc.

Entity Types belong to a Containment Hierarchy Entities contain groups of other entities Ex: a class contains methods and attributes



Dr. Radu Marinescu

Containment Hierarchy



Dr. Radu Marinescu

Relations

Entity Entity Type

dictionaries

PropertyComputer

GroupBuilder

FilteringRule

ResultEntity

GroupEntity

* ** *



Dr. Radu Marinescu

retrieve

look-upin dictionary

do you knowCBO property?

Computing of Properties

ViewUI(Entity)“CBO”

?class

(EntityType)

PropertyComputers

CBO29.0

(ResultEntity)

numerical(EntityType)

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Dr. Radu Marinescu

(GroupEntity)

(GroupEntity)

applyFiltermodel package

Filters

retrieve

look-upin dictionary

package(EntityType)

FilteringRules

model package

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Dr. Radu Marinescu

How do our tools collaborate?

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Dr. Radu Marinescu

Only data exchange

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Dr. Radu Marinescu

• Different programming languages• Different meta-models• Different front-ends

Why?

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Dr. Radu Marinescu

NOREXDistributed collaborative reengineering

Our solution

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Dr. Radu Marinescu

Features

• Language independent• Distributed• Community focused

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Dr. Radu Marinescu

Distributed collaboration

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Dr. Radu Marinescu

What you do

• Declare your meta-model (in MOF)• Decouple the tool’s services• Specify your services

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Dr. Radu Marinescu

Clients and Servers

Clients have the data model model is “shaped” by a client-specific meta-model

Servers have the processors

reengineering analyses (e.g metrics, visualizations etc) assume another meta-model accesses to meta-model are expressed as

command objects

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Dr. Radu Marinescu

Encapsulate model in command objectspublic int NoPM(MMClass aClass) {int publicCount = 0;for(MMMethod aMethod : aClass.getMethods()) if(aMethod.isPublic()) publicCount++;return publicCount;}

public int NoPM(Object aClass, CollectionCommand methodsCom, BooleanCommand isPublicCom) {int publicCount = 0;for(Object aMethod : methodsCom.execute(aClass)) if(isPublicCom.execute(aMethod)) publicCount++;return publicCount;}

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Dr. Radu Marinescu

Create a NOREX Service

Service Manifesto specifies the entity on which the service runs specifies the command objects that need to be

provided

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Dr. Radu Marinescu

Configuring a service to run

Do the mapping between the two meta-models translate client’s into

servers’ meta-models “Lazy” approach

I don’t translate the whole meta-model, but only what is needed for the analysis

I do it only once stored in a dictionary

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Dr. Radu Marinescu

Creating Service Object

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Dr. Radu Marinescu

Results are Transparent

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Dr. Radu Marinescu

NOREX is not a toy...

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Dr. Radu Marinescu

NOREX

A Distributed Reengineering

EnvironmentRadu Marinescu

LOOSE Research Group Politehnica University of Timişoara

[email protected]

loose.upt.ro

mailto:[email protected]

Documents

NOREX A Distributed Reengineering Environment